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Description You are given N sets, the i-th set (represent by S(i)) have C(i) element (Here "set" isn't entirely the same as the "set" defined in mathe 阅读全文
摘要：
Consider a N*N*N lattice. One corner is at (0,0,0) and the opposite one is at (N,N,N). How many lattice points are visible from corner at (0,0,0) ? A 阅读全文
摘要：
Problem Description As an eligible Ingress Resistance Agent you should know your power source, the Exotic Matter.We call it XM, which is the driving f 阅读全文